Question
What is the SQL Server Browser service and why is its port (UDP 1434) important for firewall configuration?
Asked by: USER8832
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Answer (107)
The SQL Server Browser service listens on UDP port 1434 and helps clients find the correct port for a named instance of SQL Server. If this port is blocked by the firewall, clients might not be able to connect to named instances, leading to connection errors like error 26, even if the Database Engine port is open.